Anemia (plant)

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Anemia is a genus of ferns. It is the only genus in the family Anemiaceae in the Pteridophyte Phylogeny Group classification of 2016 (PPG I).[1] Alternatively, the genus may be placed as the only genus in the subfamily Anemioideae of a more broadly defined family Schizaeaceae,[2] the family placement used in Plants of the World Online as of November 2019.[3] Its species are sometimes called flowering ferns, but this term is more commonly applied to ferns of the genus Osmunda. Fronds are dimorphic; in fertile fronds, the two lowermost pinnae are highly modified to bear the sporangia.

Anemia mexicana 002.jpg
Mexican flowering fern (A. mexicana)
Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Schizaeales
Family: Anemiaceae
Genus: Anemia
Type species
Anemia phyllitidis
(L.) Sw.

See text.

  • Anemiaebotrys Fee 1869
  • Anemidictyon Smith 1841 ex Hook. 1842
  • Anemirhiza Smith 1855
  • Colina Greene 1893
  • Coptophyllum Gardner 1842 non Korth. 1850
  • Cryptophyllum Schlechtendahl 1843
  • Hemianemia (Prantl 1881) Reed 1948
  • Mohria Swartz 1806 non Britton 1893
  • Ornithopteris Bernhardi 1805 non (Agardh 1839) Smith 1875
  • Spathepteris Presl 1846
  • Trochopteris Gardner 1842

Ferns in this genus have chromosome numbers based on x=38: n=38, 76, 114.[citation needed]


The genus Anemia was first described by the Swedish botanist Olof Swartz in 1806. The family Anemiaceae was created by Johann Link in 1841. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), Anemia includes Mohria and Colina and is the only genus in the family.[1] Some sources do not separate the family Anemiaceae from Schizaeaceae.[4]


Phylogeny of Anemia[5][6]

A. colimensis

A. cicutaria

A. wrightii

A. adiantifolia

A. mexicana

A. abbottii

A. portoricensis

A. lanipes


A. caffrorum

A. marginalis

A. vestita

A. mohriana

A. nudiuscula


A. guatemalensis

A. karwinskyana

A. ferruginea

A. myriophylla

A. trichorhiza

A. eximia

A. elegans

A. lanata

A. gardneri

A. lanuginosa

A. glareosa

A. millefolia

A. flexuosa

A. australis

A. tomentosa

A. irwinii

A. clinata

A. smithii

A. patens

A. retroflexa

A. imbricata

A. raddiana

A. organensis

A. spicantoides

A. villosa

A. aspera

A. labiakii

A. schimperiana

A. angolensis

A. simii

A. hirta

A. dregeana

A. warmingii

A. rotundifolia

A. salvadorensis

A. nervosa

A. phyllitidis

A. lancea

A. underwoodiana

A. repens

A. herzogii

A. wettsteinii

A. dentata

A. rosulata

A. luetzelburgii

A. collina

A. nicaraguensis

A. hirsuta

A. tenera

A. jaliscana

A. affinis

A. multiplex

A. andersonii

A. sertaneja

A. humilis

A. mynsseniana

A. oblongifolia

A. pubescens

A. hispida

A. presliana

As of November 2019, Plants of the World Online accepted the following species:[3]


  1. ^ a b PPG I (2016). "A community-derived classification for extant lycophytes and ferns". Journal of Systematics and Evolution. 54 (6): 563–603. doi:10.1111/jse.12229. S2CID 39980610.
  2. ^ Christenhusz, Maarten J.M. & Chase, Mark W. (2014). "Trends and concepts in fern classification". Annals of Botany. 113 (9): 571–594. doi:10.1093/aob/mct299. PMC 3936591. PMID 24532607.
  3. ^ a b "Anemia Sw". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-11-24.
  4. ^ "Anemiaceae". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-08-08.
  5. ^ Nitta, Joel H.; Schuettpelz, Eric; Ramírez-Barahona, Santiago; Iwasaki, Wataru; et al. (2022). "An Open and Continuously Updated Fern Tree of Life". Frontiers in Plant Sciences. 13: 909768. doi:10.3389/fpls.2022.909768. PMC 9449725. PMID 36092417.
  6. ^ "Tree viewer: interactive visualization of FTOL". FTOL v1.3.0. 2022. Retrieved 12 December 2022.